Roll polisher



Feb. 10. 1925.

F. ACKERMAN 2 Sheets-Sheet 1 =5 MMMMMM ROLL POLISHER 'Filed Aug. 1, 1923 2 Sheds-Sheet 2 1 l I l I l l I l Zlwuentoz Patented Feb. 10, 1925.

PATENT OFFICE.

FRANK ACKERMAN, or CANTON, OHIO.

R LL POLISHER.

Application filed August 1, 1923. Serial No. 555,683.

To all whom it may concern.

Be it known that I, FRANK Aonnnamn, a citizen of the United States, residing at Canton, in the county of Stark and State of Ohio, have invented certain new and useful Improvements in non Polishers, of which the following is a specification.

The invention relates to polishers for use upon the rolls of rolling mills, and has for its objects to provide a roll polisher including apolishing bloc'l'rarranged to engage both rolls of av mill near the pinch of the rolls, and provided with means connected to one of the rolls, whereby the polishing block is reciprooated longitudinally by the rotation of the rolls.

The above and other objects may be attained by Constructing the invention in the manner illustrated in the accompanying drawing, in which-= Figure 1 is an elevation of the roll polisher embodying the invention;

Fig. 2, a top plan View ofthe same, showing the connection to the rolls;

Fig. 3, a section on the line 33, Fig. l, shpwing the block in engagement with the ro lsgig. 4, a section on the line H, Fig. 1; an

Fig. an end view of a rolling mill showing the improved polisher.

Similar numerals refer throughout the drawing.

In the practical operation of rolling mills, the polishing of the rolls has constituted one of the most troublesome and expensive problems. The great cost of the rolls and the care with which they must be made and used are fundamental facts of common knowledge to those skilled in the art.

In use, the finished polished surface of the rolls becomes scratched and roughened, and as the demand of the trade is for a product having a smooth and even surface, frequent polishings are necessary in order to maintain the rolls in proper condition.

This polishing is commonly accomplished by manually holding a large polishing block of carborundum against the rolls, although other devices have been provided for attachment to the housings of the mill, means being provided for manually operating a block of oarborundum or the like to move to similar parts the same longitudinally of the rolls while the same are in operation.

With these methods, however, considerable time is required to properly polish the rolls and the rolls thus become cool, during the polishing operation, resulting in con 'siderable economic loss for all concerned.

By the present invention it is proposed to remedy the above mentioned defects by providing a polishing device which is quickly attached to or detached from the housing of the mill and which automatically 65 reciprocates a polishing block longitudinally of the rolls by the operation of the rolls themselves.

Referring to the construction illustrated in the drawing, the housings of a rolling mill are indicated in part at 1 and the rolls at 2. These parts may be of any approved and well known construction.

Essentially the invention includes a guide bar 3 having'the dove-tailed grooves 4: at opposite end portions to receive the dovetailed ribs 5 of the angle irons 6, set screws 7 holding the angle irons in adjusted position upon the guide bar.

In assembling the device upon a mill, the angular extensions of the iron 6 are extended into the usual slot in the guide bar of the mill and the angle irons, are adjusted laterally upon the guide bar to engage the inner surfaces of the housing, the setscrews 85 7 being tightened to hold the irons in this adjusted position.

The bar 8 is mounted for lateral reciprocation upon the guide bar 3, being provided with the dove-tailed rib 9 which is slidably mounted in the dovetailed groove 10 of the guide bar.

A block 11 of carborundum or the like, preferably tapered upon its upper and lower sides, is connected to the sliding bar 8 as by the strips 12 provided with the tapered inner surfaces 13 for engagement with the upper and lower sides of the block, screws 14- connecting the strips 12 to the sliding bar and holding the carborundum block rigid between said strips.

For the purpose of adjusting the device toward the rolls, sockets 15 are formed upon the outer side of the guide bar 3 and the adjusting screws 16 are swivelled therein, each of said screws being provided with a squared nut 17 arranged to be received in the usual slot in the guide bar, a shoulder 18 engaging the inner edge of the guide bar to prevent outward movement of the nut. A head 19 provided with handles 20 is formed upon the outer end of each adjusting screw tor the purpose of turning the same.

For the purpose of reciprocating the carborundum block longitudinally of the rolls by the operation of the rolls, an ear 21 is formed upon one end of the sliding bar 8, a link 22 pivotally connecting the ear with one end of the bell crank 23, which is pivoted as at 24 to a bracket 25 fixed upon the housing. The other end of the bell crank is connected by the link 26 with a wrist pin 27 mounted upon the end of the Wobbler 28 of one of the rolls of the mill.

Then the device is mounted upon the housings as above described, and adjusted to bring the inner corners of the carboruir dum block into engagement with both of the rolls, as shown in Fig. 3, and the sliding bar 8 is connected to the wrist pin upon thewobbler of the roll as above described, it will be seen that as the roll rotates the carborundum block will be automatically reciprocated longitudinally of the rolls, thus smoothly polishing both of the rolls at the same time, and preventing the formation of any ridges or grooves therein by the polish ing block.

It will, of course, be understood that the link and lever connection between the sliding bar and the Wobbler of the roll is detachable in order that the device may be quickly mounted upon the mills or dismantled.

I claim 1. A roll polisher for a rolling mill having housings and rolls and including a polishing block arranged to engage one of the rolls and a lever and link connection between the polishing block and one of the rolls for longitudinally reciprocating the polishing block.

2. A roll polisher :tor a rolling mill having housings and rolls and including a guide bar arranged toengage the housings of the mill, a sliding bar mounted for longitudinal reciprocation upon the guide bar, a polishing block upon the sliding bar arranged to engage the rolls of the mill, a bell crank upon one of the housings of the mill and links connecting the bell crank with the sliding bar and with one of the rolls, whereby the sliding bar is reciprocated by the rotation of said roll.

3. A roll polisher for a rolling mill having housings and rolls and including a guide bar arranged to engage the housings of the mill, a sliding bar mounted for longitudinal reciprocation upon the guide bar, a polishing block upon the sliding bar arranged to engage the rolls of the mill, a bell crank upon one of the housings of the mill and links connecting the bell crank with the sliding bar and with one of the rolls, Whereby the sliding bar is reciprocated by the rotation of said roll, and adjusting screws for adjusting the guide bar toward or from the rolls.

In testimony that I claim the above, I have hereunto subscribed my name.

FRANK AOKERMAN, 

